We look at the division of 21325187 by 171 
We want to figure out the number of times 21325187 can be divided by 171.

On to step 1:
2 divided by 171 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 171

Going ahead to step 2:
21 divided by 171 is 0 with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Append the next digit (3) from the dividend to 21 and continue with: 213 / 171

Moving on to step 3:
If we divide 213 by 171, we get 1 and a remainder of 42.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 42 after subtracting 171 from 213.
Append the next digit (2) from the dividend to 42 and continue with: 422 / 171

Going ahead to step 4:
171 goes into 422 2 times with a remainder of 80.
The next digit of our result is 2. 
Result so far: 12.0
If we take 342 away from 422, we end up with 80.
Append the next digit (5) from the dividend to 80 and continue with: 805 / 171

Going ahead to step 5:
805 divided by 171 is 4 with a remainder of 121.
Write down 4 as next digit of the result. 
Result so far: 124.0
Subtracting 684 from 805 leaves us with 121.
Append the next digit (1) from the dividend to 121 and continue with: 1211 / 171

Let's proceed to step 6:
171 can be fit into 1211 7 times, resulting in a remainder of 14.
The next digit of our result is 7. 
Result so far: 1247.0
Deduct 1197 from 1211 and we're left with 14.
Append the next digit (8) from the dividend to 14 and continue with: 148 / 171

Step 7:
171 can be fit into 148 0 times, resulting in a remainder of 148.
Write down 0 as next digit of the result. 
Result so far: 12470.0
Subtracting 0 from 148 leaves us with 148.
Fetch the next digit (7) from the dividend, attach it to 148 and continue: 1487 / 171

On to step 8:
171 goes into 1487 8 times with a remainder of 119.
Use 8 as the next digit of our solution. 
Result so far: 124708.0
Subtracting 1368 from 1487 leaves us with 119.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

Advancing to step 9:
If we divide 1190 by 171, we get 6 and a remainder of 164.
Write down 6 as next digit of the result. 
Result so far: 124708.6
If we take 1026 away from 1190, we end up with 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Going ahead to step 10:
1640 divided by 171 is 9 with a remainder of 101.
Put 9 as the next digit of the answer. 
Result so far: 124708.69
The remainder is 101 after subtracting 1539 from 1640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Let's proceed to step 11:
171 goes into 1010 5 times with a remainder of 155.
The next digit of our result is 5. 
Result so far: 124708.695
If we subtract 855 from 1010, we get 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Going ahead to step 12:
171 goes into 1550 9 times with a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 124708.6959
The remainder is 11 after subtracting 1539 from 1550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 13:
When dividing 110 by 171, we get 0 with a remainder of 110.
Record the quotient 0 as the next digit in the result. 
Result so far: 124708.6959
If we take 0 away from 110, we end up with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Moving on to step 14:
171 can be fit into 1100 6 times, resulting in a remainder of 74.
Write down 6 as next digit of the result. 
Result so far: 124708.695906
Subtracting 1026 from 1100 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Advancing to step 15:
If we divide 740 by 171, we get 4 and a remainder of 56.
Write down 4 as next digit of the result. 
Result so far: 124708.6959064
If we take 684 away from 740, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 16:
When dividing 560 by 171, we get 3 with a remainder of 47.
The number 3 becomes the next digit in our result. 
Result so far: 124708.69590643
Deduct 513 from 560 and we're left with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

The final outcome is 124708.69590643, with a leftover of 4.7e-08.